The Experts below are selected from a list of 116226 Experts worldwide ranked by ideXlab platform
H Tanaka - One of the best experts on this subject based on the ideXlab platform.
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sample dependence of half integer quantized thermal hall effect in the kitaev spin liquid candidate α rucl 3
Physical Review B, 2020Co-Authors: M Yamashita, Nobuyuki Kurita, Jun Gouchi, Yoshiya Uwatoko, H TanakaAbstract:We have investigated the sample dependence of the half-integer thermal Hall effect in $\ensuremath{\alpha}\text{\ensuremath{-}}{\mathrm{RuCl}}_{3}$ under a Magnetic field tilted ${45}^{\ensuremath{\circ}}$ from the $c$ axis to the $a$ axis. We find that the sample with the largest longitudinal thermal conductivity ${\ensuremath{\kappa}}_{xx}$ shows the half-integer quantized thermal Hall effect expected in the Kitaev model. On the other hand, the quantized thermal Hall effect was not observed in the samples with smaller ${\ensuremath{\kappa}}_{xx}$. We suggest that suppressing the Magnetic Scattering effects on the phonon thermal conduction, which broaden the field-induced gap protecting the chiral edge current of the Majorana fermions, is important to observe the quantized thermal Hall effect.
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sample dependence of the half integer quantized thermal hall effect in a kitaev candidate alpha rucl _3
arXiv: Strongly Correlated Electrons, 2020Co-Authors: M Yamashita, Nobuyuki Kurita, H TanakaAbstract:We have investigated the sample dependence of the half-integer thermal Hall effect in $\alpha$-RuCl$_3$ under a Magnetic field tilted 45 degree from the $c$ axis to the $a$ axis. We find that the sample with the largest longitudinal thermal conductivity ($\kappa_{xx}$) shows the half-integer quantized thermal Hall effect expected in the Kitaev model. On the other hand, the quantized thermal Hall effect was not observed in the samples with smaller $\kappa_{xx}$. We suggest that suppressing the Magnetic Scattering effects on the phonon thermal conduction, which broaden the field-induced gap protecting the chiral edge current of the Majorana fermions, is important to observe the quantized thermal Hall effect.
P Bordet - One of the best experts on this subject based on the ideXlab platform.
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one dimensional short range Magnetic correlations in the magnetoelectric pyroxene camnge 2 o 6
Physical Review B, 2016Co-Authors: Lei Ding, Claire V Colin, C Darie, Julien Robert, P BordetAbstract:We have investigated the Magnetic and magnetoelectric properties of CaMnGe2O6 by means of powder neutron diffraction, Magnetic susceptibility, heat capacity, and electrical polarization measurements. The presence of one-dimensional short-range Magnetic correlations within the MnO6 octahedra chains well above long-range antiferroMagnetic ordering (15 K) was evidenced. A one-dimensional antiferroMagnetic correlation model along the zigzag chains was developed to fit the diffuse Magnetic Scattering. The linear magnetoelectric effect and pertinent ferrotoroidicity, allowed by the Magnetic symmetry (C2′/c), have been verified experimentally and theoretically.
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one dimensional short range Magnetic correlations in the magnetoelectric pyroxene camnge 2 o 6
Physical Review B, 2016Co-Authors: Lei Ding, Claire V Colin, C Darie, Julien Robert, P BordetAbstract:We have investigated the Magnetic and magnetoelectric properties of ${\mathrm{CaMnGe}}_{2}{\mathrm{O}}_{6}$ by means of powder neutron diffraction, Magnetic susceptibility, heat capacity, and electrical polarization measurements. The presence of one-dimensional short-range Magnetic correlations within the ${\mathrm{MnO}}_{6}$ octahedra chains well above long-range antiferroMagnetic ordering (15 K) was evidenced. A one-dimensional antiferroMagnetic correlation model along the zigzag chains was developed to fit the diffuse Magnetic Scattering. The linear magnetoelectric effect and pertinent ferrotoroidicity, allowed by the Magnetic symmetry ($C{2}^{\ensuremath{'}}/c$), have been verified experimentally and theoretically.
M Sacchi - One of the best experts on this subject based on the ideXlab platform.
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in plane rotation of Magnetic stripe domains in fe1 xgax thin films
Physical Review B, 2015Co-Authors: Riccardo Tomasello, M Sacchi, Horia Popescu, C Hepburn, Giovanni Finocchio, Maria Carpentieri, Marina Marangolo, Mahmoud Eddrief, Diego Bisero, Andrea RettoriAbstract:The in-plane rotation of Magnetic stripe domains in a 65-nm magnetostrictive Fe0.8Ga0.2 epitaxial film was investigated combining Magnetic force microscopy, vibration sample magnetometry, and x-ray resonant Magnetic Scattering measurements. We analyzed the behavior of the stripe pattern under the application of a bias Magnetic field along the in-plane direction perpendicular to the stripe axis, and made a comparison with the analogous behavior at remanence. The experimental results have been explained by means of microMagnetic simulations, supported by energy balance considerations. Fields smaller than ∼400 Oe do not induce any stripe rotation; rather, a deformation of the closure domains pattern was evidenced. Larger fields produce a sudden rotation of the stripe structure.
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in plane rotation of Magnetic stripe domains in fe1 xgax thin films
Physical Review B, 2015Co-Authors: Samuele Fin, Riccardo Tomasello, M Sacchi, Horia Popescu, C Hepburn, Giovanni Finocchio, Marina Marangolo, Mahmoud Eddrief, Diego Bisero, Mario CarpentieriAbstract:The in-plane rotation of Magnetic stripe domains in a 65-nm magnetostrictive ${\mathrm{Fe}}_{0.8}{\mathrm{Ga}}_{0.2}$ epitaxial film was investigated combining Magnetic force microscopy, vibration sample magnetometry, and x-ray resonant Magnetic Scattering measurements. We analyzed the behavior of the stripe pattern under the application of a bias Magnetic field along the in-plane direction perpendicular to the stripe axis, and made a comparison with the analogous behavior at remanence. The experimental results have been explained by means of microMagnetic simulations, supported by energy balance considerations. Fields smaller than $\ensuremath{\sim}400$ Oe do not induce any stripe rotation; rather, a deformation of the closure domains pattern was evidenced. Larger fields produce a sudden rotation of the stripe structure.
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extended reciprocal space observation of artificial spin ice with x ray resonant Magnetic Scattering
Physical Review B, 2013Co-Authors: Jonathan Perron, M Sacchi, J M Tonnerre, Luca Anghinolfi, Bharati Tudu, Nicolas JaouenAbstract:Soft x-ray resonant Magnetic Scattering is an element-sensitive technique that enables the characterization of the Magnetic properties of a wide variety of systems. Here we apply this technique to study lithographically produced artificial spin ice, a particular class of Magnetically frustrated systems comprising arrays of nanomagnets. Using a CCD detector we can access a large fraction of the reciprocal space at once, allowing us to easily distinguish the signatures of the Magnetic ground-state ordering. Comparing the dichroic signal at the position of the Bragg peaks with model calculations based on the kinematical theory of x-ray diffraction, we are able to determine the number of reversed moments as a function of applied Magnetic field for each of the two sublattices. This study demonstrates the benefit of having direct access to a significant fraction of the reciprocal space, and opens the way towards more sophisticated x-ray based experiments on artificial spin ice such as Scattering of coherent x-ray beams to explore the dynamics of thermally activated systems.
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uniaxial anisotropy and temperature driven magnetization reversal of fe deposited on a mnas gaas 001 Magnetic template
Physical Review B, 2008Co-Authors: M Sacchi, Marina Marangolo, Carlo Spezzani, L N Coelho, Romain Breitwieser, J Milano, V H EtgensAbstract:We investigated the Magnetic behavior of a $5\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ thick Fe layer deposited on a ferroMagnetic $\mathrm{Mn}\mathrm{As}∕\mathrm{Ga}\mathrm{As}(001)$ template by using resonant Magnetic Scattering of polarized soft x rays. The Fe film displays in-plane uniaxial anisotropy and its magnetization can be modified and reversed by fine-tuning the substrate temperature around ambient because of the self-organization of the coexisting ferroMagnetic and paraMagnetic phases of the template.
M Yamashita - One of the best experts on this subject based on the ideXlab platform.
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sample dependence of half integer quantized thermal hall effect in the kitaev spin liquid candidate α rucl 3
Physical Review B, 2020Co-Authors: M Yamashita, Nobuyuki Kurita, Jun Gouchi, Yoshiya Uwatoko, H TanakaAbstract:We have investigated the sample dependence of the half-integer thermal Hall effect in $\ensuremath{\alpha}\text{\ensuremath{-}}{\mathrm{RuCl}}_{3}$ under a Magnetic field tilted ${45}^{\ensuremath{\circ}}$ from the $c$ axis to the $a$ axis. We find that the sample with the largest longitudinal thermal conductivity ${\ensuremath{\kappa}}_{xx}$ shows the half-integer quantized thermal Hall effect expected in the Kitaev model. On the other hand, the quantized thermal Hall effect was not observed in the samples with smaller ${\ensuremath{\kappa}}_{xx}$. We suggest that suppressing the Magnetic Scattering effects on the phonon thermal conduction, which broaden the field-induced gap protecting the chiral edge current of the Majorana fermions, is important to observe the quantized thermal Hall effect.
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sample dependence of the half integer quantized thermal hall effect in a kitaev candidate alpha rucl _3
arXiv: Strongly Correlated Electrons, 2020Co-Authors: M Yamashita, Nobuyuki Kurita, H TanakaAbstract:We have investigated the sample dependence of the half-integer thermal Hall effect in $\alpha$-RuCl$_3$ under a Magnetic field tilted 45 degree from the $c$ axis to the $a$ axis. We find that the sample with the largest longitudinal thermal conductivity ($\kappa_{xx}$) shows the half-integer quantized thermal Hall effect expected in the Kitaev model. On the other hand, the quantized thermal Hall effect was not observed in the samples with smaller $\kappa_{xx}$. We suggest that suppressing the Magnetic Scattering effects on the phonon thermal conduction, which broaden the field-induced gap protecting the chiral edge current of the Majorana fermions, is important to observe the quantized thermal Hall effect.
Lei Ding - One of the best experts on this subject based on the ideXlab platform.
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one dimensional short range Magnetic correlations in the magnetoelectric pyroxene camnge 2 o 6
Physical Review B, 2016Co-Authors: Lei Ding, Claire V Colin, C Darie, Julien Robert, P BordetAbstract:We have investigated the Magnetic and magnetoelectric properties of CaMnGe2O6 by means of powder neutron diffraction, Magnetic susceptibility, heat capacity, and electrical polarization measurements. The presence of one-dimensional short-range Magnetic correlations within the MnO6 octahedra chains well above long-range antiferroMagnetic ordering (15 K) was evidenced. A one-dimensional antiferroMagnetic correlation model along the zigzag chains was developed to fit the diffuse Magnetic Scattering. The linear magnetoelectric effect and pertinent ferrotoroidicity, allowed by the Magnetic symmetry (C2′/c), have been verified experimentally and theoretically.
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one dimensional short range Magnetic correlations in the magnetoelectric pyroxene camnge 2 o 6
Physical Review B, 2016Co-Authors: Lei Ding, Claire V Colin, C Darie, Julien Robert, P BordetAbstract:We have investigated the Magnetic and magnetoelectric properties of ${\mathrm{CaMnGe}}_{2}{\mathrm{O}}_{6}$ by means of powder neutron diffraction, Magnetic susceptibility, heat capacity, and electrical polarization measurements. The presence of one-dimensional short-range Magnetic correlations within the ${\mathrm{MnO}}_{6}$ octahedra chains well above long-range antiferroMagnetic ordering (15 K) was evidenced. A one-dimensional antiferroMagnetic correlation model along the zigzag chains was developed to fit the diffuse Magnetic Scattering. The linear magnetoelectric effect and pertinent ferrotoroidicity, allowed by the Magnetic symmetry ($C{2}^{\ensuremath{'}}/c$), have been verified experimentally and theoretically.